Mr Rees’ reign as premier is tipped to come to an end on Thursday evening, after 17 members of the Right faction succeeded in calling a special caucus meeting for a leadership challenge.

Mr O’Farrell said NSW voters deserved an early election and Mr Rees needed to call a no-confidence vote against the government.

“The only way NSW gets a change for the better today, is for Nathan Rees to do the honourable thing and commit to a vote for no-confidence to allow the early election the public wants," he told reporters on Thursday.

“Whoever emerges as leader will be leading a party that Nathan Rees described as dysfunctional, corrupt, malignant and not capable of doing the job in NSW."

The CEO of the NSW Business Chamber, Stephen Cartwright, also urged the government to get their act together.

“We need a government focused on policies and solutions rather than a government focused on personalities and the spoils of office."